Union Optic-waveplate
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Polarizing Optic—WaveplateOverview Waveplate Overview Waveplates (retarders) are made from birefringent materials which introduce a phase difference between the fast and slow principal axis of the waveplate. The optical axis of waveplate is parallel to the face. Light incident normal to the surface will be split to components polarized parallel and perpendicular to the optical axis with different refractive index and velocity in this device. The difference in velocities gives rise to a phase shift which is called retardance. At any specific wavelength the phase retardance is governed by the thickness of Waveplates. The standard waveplates we provided include half waveplates and quarter waveplates, other custom waveplates can also be provided upon request. Half Waveplate When applying a linearly polarized beam to a half waveplate, it emerges as a linearly polarized beam but its polarization plane is rotated with respect to the polarization plane of the input beam. The rotation of the polarization plane is such that the angle between the input polarization and the output polarization is twice the angle between the input polarization and the waveplate's axis. When applying a circularly polarized beam, a clockwise circular polarization will transform into a counter-clockwise circular polarization and vice versa. Half waveplates are often used as continuously adjustable polarization rotators and as a variable ratio beamsplitter when used in conjunction with a polarization beamsplitter cube. Quarter Waveplate When applying a linearly polarized beam with the polarization plane aligned at 45deg to the waveplate's principal plane, the output beam will be circularly polarized. Similarly when applying a circularly polarized beam to a A/4 waveplate the output beam will be linearly polarized. When a quarter waveplate is double passed, i.e. by mirror reflection, it acts as a half waveplate and rotates the plane of polarization to a certain angle. Quarter waveplates are widely used in creating circular polarization from linear or linear polarization from circular, ellipsometry, optical pumping, suppressing unwanted reflection, optical isolation and etc. Optical Axis

Polarizing Optic —Types of Waveplate Order Information C ~1— EEH9—WSiSiJ 3 Part No.-Wavelength-Mount Diameter

Polarizing Optic—AchromaticWaveplate Achromatic Waveplate Achromatic waveplate is similar to zero order waveplate except that the two plates are made from different birefringent crystals. Since the dispersion of the birefringence of two materials is different, it is possible to specify the retardation values at a broad wavelength range. So, the retardation will be less sensitive to wavelength change. In other words, it can be used at a broadband wavelength range. Epoxy Cemented or Air Spaced available Very Broad Bandwidth Custom size available RoHS Compliant Retardation Curve

Polarizing Optic—AchromaticWaveplate Dimension Tolerance Wavefront Distortion Retardation Tolerance Surface Quality Clear Aperture Standard Wave Standard Wavelength Damage Threshold <10 arc seconds (for single plate) Both sides AR coated, R<1% per face Standard Products-Cemented Type Order Information [" ffitM—)—O Part No.-Wavelength-Mount Diameter

Polarizing Optic—Zero Order Waveplate Zero Order Waveplate Zero order waveplate is constructed by two quartz plates with their fast axis crossed. The difference in thickness between the two plates determines the retardance. Zero order waveplates offer a substantially lower dependence on temperature and wavelength change than multi-order waveplates. Dimension Tolerance Wavefront Distortion Retardation Tolerance Parallelism (Single Quartz Plate) Surface Quality Clear Aperture Standard Wave Crystal Quartz Damage Threshold Cemented & Optically Contacted Zero Order Better Temperature Bandwidth...

Air Spaced Zero Order Waveplate Air spaced zero order waveplate is constructed by two quartz plates installed in a mount, to form a air gap between the two quartz plates. The difference in thickness between the two plates determines the retardance. Zero order waveplates offer a substantially lower dependence on temperature and wavelength change than multi-order waveplates. High Damage Threshold Better Temperature Bandwidth Wide Wavelength Bandwidth RoHS Compliant Standard Product True Zero Order Waveplate The thickness of a true zero order quartz plate is very thin, it is very easily...

Single Plate High Power Waveplate Dimension Tolerance Wavefront Distortion Retardation Tolerance Surface Quality Clear Aperture Standard Wave Damage Threshold Standard Products Crystal Quartz Single Plate High Power Waveplate Union Optic can offer single plate high power waveplate now, due to our unique technology, we can make thickness down to 20 microns. Thanks to her high damage threshold, single plate high power waveplate is normally used in high power application. • High Damage Threshold • Better Temperature Bandwidth Wide Wavelength Bandwidth Wide Acceptance Angle Mounted in 025.4x6mm...

Polarizing Optic — Multi Order Waveplate Dimension Tolerance Wavefront Distortion Retardation Tolerance Acceptance Angle Surface Quality Clear Aperture Standard Wave Damage Threshold Crystal Quartz Standard Products Multi Order Waveplate Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order waveplate is always around 0.5mm. Compared with zero order waveplate, multi order waveplate is more sensitive to wavelength and temperature changes. However, they...

Polarizing Optic- Dual Wavelength Waveplate Dimension Tolerance Wavefront Distortion Retardation Tolerance Surface Quality Clear Aperture Standard Wave Damage Threshold Standard Products Crystal Quartz Dual Wavelength Waveplate This waveplate is a special kind of multi order waveplate. Dual wavelength waveplate is designed to be used in dual wavelength setups, for example, it can be operated as a quarter waveplate @1064nm and as a half waveplate @532nm at the same time. It's always used to manage the states of polarization of laser beams to obtain maximum conversion efficiency. Optional...